Acquisition of BAM Labs, Inc. (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015	Sep. 29, 2015
Business Acquisition [Line Items]
Cash paid to acquire remaining capital stock of BAM Labs, Inc.		$ 0	$ 70,018	$ 0
Research and Development Expense		27,991	15,971	8,233
Goodwill		64,046	64,046	$ 8,963
BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Remeasured Fair Value	$ 12,900
Cash paid to acquire remaining capital stock of BAM Labs, Inc.	$ 57,100
Total acquisition price			70,018
Accounts Receivables			105
Prepaid expenses			98
Property and Equipment			91
Deferred income taxes			2,754
Goodwill			55,083
Intangible Assets			13,619
Total Assets Acquired			71,750
Accounts Payable			269
Compensation and benefits			322
Other long-term liabilities			1,141
Total liabilities acquired			1,732
Developed Technologies [Member] | BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life - acquired developed technologies	8 years
Other Noncurrent Assets [Member]
Business Acquisition [Line Items]
Cost Method Investment					$ 6,000
Research and Development Expense [Member] | BAM Labs, Inc. [Member]
Business Acquisition [Line Items]
Research and Development Expense		$ 13,000	$ 3,300